Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
040037lightly pollutedexcellent71excellent
030044lightly pollutedexcellent81excellent
020039lightly pollutedexcellent61excellent
010036goodexcellent61excellent
000031goodexcellent71excellent
230045lightly pollutedexcellent81excellent
220044lightly pollutedexcellent71excellent
210054lightly pollutedexcellent91excellent
200061moderately pollutedexcellent91excellent
190046lightly pollutedexcellent71excellent
180032goodexcellent71excellent
170031goodexcellent61excellent
160033goodexcellent61excellent
150022goodexcellent61excellent
140026goodexcellent51excellent
130025goodexcellent41excellent
120021goodexcellent41excellent
110029goodexcellent51excellent
100031goodexcellent61excellent
090034goodexcellent61excellent
080026goodexcellent51excellent
070025goodexcellent41excellent
060019goodexcellent41excellent
050020goodexcellent41excellent